function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Universitatis Daugavpiliensis', 5],
    ['Amurian Zoological Journal', 2],
    ['Annals and Magazine of Natural History, Including Zoology, Botany and Geology, Being a Continuation of the \' Magazine of Botany ', 1],
    ['Biodiversity Data Journal', 1],
    ['Bulletin of the National Science Museum, Series A (Zoology)', 2],
    ['C. G. Proft, Fil. et Soc.', 2],
    ['Caucasiana', 1],
    ['Entomologist\'s monthly magazine', 4],
    ['Far Eastern Entomologist', 1],
    ['Japanese Journal of Systematic Entomology', 8],
    ['Linzer biologische Beiträge', 9],
    ['Mélanges exotico-entomologiques. Moulins', 1],
    ['Neuestes Magazin für die Liebhaber der Entomologie / Schneider', 3],
    ['Pacific insects monograph', 1],
    ['Zootaxa', 9],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=51)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);